Improvement in tremolos for reed-organs



LEVI K.' FULLER.

lmprovement in Tremolos for Reed Organs.

Patented Dec. 5, 1871.

1 1/27! 0&

UNITED STATES PATENT OFFICE.

LEVI K. FULLER, OF BRATTLEBOROUG-H, VERMONT, ASSIGNQR- TO J. ESTEY St00., OF SAME PLACE.

IMPROVEMENT IN TREMOLOS FOR REED-ORGANS.

Specification forming part of Letters Patent N 0. 121,610, datedDecember 5, 1871.

To all whom it may concern:

Be it known that I, LEVI K. FULLER, of Brattleborough, in the county ofWVindham and State of Vermont, have invented an Im1 )rovement in theTremolo of Reed Organs, of which the following is a specification:

My invention consists in an improved stop mechanism, whereby the motionof the fan can be instantly arrested by the interposition of a resistingmedium to overcome the rotation.

Figure l is a sectional view of the actionboard, shaft, and fan of thetremolo mechanism of a cottage or reedorgan, showing in elevation thebox B containing the driving attachment and the device for arresting themotion ot the tremolo. Fig. 2 is a side view of the same parts.

As represented in the drawing, A is the actionboard; B, the boxcontaining the motor-wheel, by which, under the influence of a currentofair, the shaft D is rotated carrying the fans 0 0, by which the tremoloin the tone is produced. A sliding bar, E, is held to the side of thebox B by brackets ff, or other suitable support, which allow it to movefreely in a longitudinal direction to a limited extent. This bar isprovided with a knob, c, for the convenience of the performer ineffecting this movement, and is arranged in proximity with the shaft D.On the side next the shaft this bar is provided with an abrupt shoulder,or other equivalent projection,

at F. The shaft D has a radial spur or pin, G in such a position thatwhen the slide is pushed in the spur meets the projection F, which atonce arrests the rotation of the fan. When the slide is drawn out, asindicated by dotted lines, the shoulder is removed from contact with thepin and the rotation is not interfered with.

More than one spur may be employed, it desired, the main object being toquickly and completely arrest the rotation by the interposition of apositive obstacle to its continuance. Hereto fore the motion has beenstopped by applying a break or by similar mechanism, which is notinstantaneous but gradual and uncertain in its action. My device is bothinstantaneous and eftectual, and places the tremolo attachmentcompletely under the control of the pertormer.

I claim as my invention The spur G on the fan-shaft l), acting in contbination with the stop or projection F for controlling the tremoloattachment of 1f);l1'l( 1'-Olg{tlls, substantially as set forth.

In witness whereofl have hereunto signed m y name in the presence of twosubscribing witnesses.

LEVl 1i. FULLER.

Y'Vitnesses:

K. HAsKLNs, L. L. DAVIS.

